permanent wave
英 [ˌpɜːmənənt ˈweɪv]
美 [ˌpɜːrmənənt ˈweɪv]
n. 同 perm; 卷发; 烫发
柯林斯词典
- 同perm
Apermanent waveis the same as aperm.
英英释义
noun
双语例句
- Do you want a permanent wave or a cold wave?
你想电烫还是冷烫？ - The Optimum Logic Resolving Structure Research of Permanent Magnet Brushless DC Motor With Square Wave Current
永磁方波无刷直流机最佳逻辑解析结构的研究 - Experimental Research on Speed Regulation System of Rare-Earth Permanent Magnet Square Wave Brushless DC Motor
稀土永磁方波无刷直流电动机调速系统的实验研究 - The factors affecting permanent magnet eddy current loss calculated by using FEM method have been researched. The magnetic vector potential wave, the density wave of eddy current and the distribution of eddy current are obtained.
研究了运用有限元计算永磁体涡流损耗的影响因素，得到了永磁体内的磁矢位波形、涡流密度波形和涡流分布。 - Double driving and controlling apparatus media with permanent magnet is manufactured; reasonable regulating rotating velocity of upon and down driver can improve shape of meniscus, suppress surface wave, and stir molten metal.
设计制造采用永磁体的双磁力驱动控制器，合理调节上、下磁驱动器的旋转速度可改善弯月面形状，平抑液面波动，搅拌内部熔体的作用； - An analytical solution shows that the Rare Earth Permanent Magnetic Brushless DC Motor which is studying in my laboratory can get a approximately square wave air-gap magnetic field density with well designed motor structure and well selected material.
分析结果表明：正在研发的稀土永磁无刷直流电动机可得到近似方波的气隙磁感应强度，从而有效减少力矩脉动，提高电动机出力，电动机结构设计和材料选用合理； - This system takes the permanent magnetic motor of square wave current regulated ( The Brushless DC Motor) as control object and realizes speed& current double closed loop control.
该控制系统以方波电流控制型永磁交流伺服电动机（多称为直流无刷电动机）为控制对象，采用转速、电流双闭环控制。 - Permanent magnet synchronous motor ( PMSM) in the system is driven with sine wave;
系统的永磁同步伺服电机采用正弦波驱动； - In the system of hybrid suspension with electromagnets and permanent magnets, a method of producing two complementary PWM wave with dead-time using CPLD is proposed.
研究电磁永磁混合悬浮系统中，利用CPLD产生两路互补、带死区的PWM波的方法。 - The direction of magnetic field, the coil geometry and the frequency of the electromagnetic field determine the wave type of transducer. Then we select the permanent magnet and the track coil to stimulate the shear wave.
因横波可作测厚的波型，根据外加磁场的方向、线圈的几何形状以及电磁场的频率能决定换能器产生的波型，选定了由永磁铁和跑道形线圈合理组合来激发所需的横波。